Royal Mail Group said no strike action by workers would take place in four London sites after it agreed an operational plan with the Communication Workers Union about the changes to mail centers in Greater London, the company said in an e-mailed statement today. The CWU confirmed that no strikes would take place in the sites, the statement said. The program of change will result in about 750 job cuts which will be carried out without compulsory redundancies, Royal Mail said in the statement.